open until 4:00 a.m., two hours later than usual. a new city policy is being tested that extends alcohol sales until 4:00 a.m. before holidays. the move is aimed at raising $3 million more in revenue. 42 bars and restaurants have been approved to stay open late. >>> still ahead, the president and mitt romney both campaigning in the swing states, but let's hear how their surrogates did on sunday talk shows, next. >> keep it here, you are watching 9news now. >>> here's a quick look at some of the things closed on there columbus day holiday. dc parking is free, no meter enforcement, trash and recycling, resumes tomorrow. >> schools and libraries are also closed today. join us and send your message of support to our wounded warriors at uso.org. the uso. until every one comes home. >>> back. we are following breaking news out of silver spring maryland. there has been a police involved shooting. montgomery county police responded to a home of a man who is making threats. >> kristen fisher joins us live from the scene with the very latest. good morning to you. >> reporter: good morning.